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The solution of using ESP32-C6 with SDIO as HOST_NG for I.MX93 #593

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@xiatian-xt

Description

@xiatian-xt

Checklist

  • Checked the issue tracker for similar issues to ensure this is not a duplicate.
  • Described the feature in detail and justified the reason for the request.
  • Provided specific use cases and examples.

Feature description

device tree
&usdhc3 {
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc3>;
pinctrl-1 = <&pinctrl_usdhc3>;
pinctrl-2 = <&pinctrl_usdhc3>;
mmc-pwrseq = <&usdhc3_pwrseq>;
bus-width = <4>;
broken-cd;
keep-power-in-suspend;
status = "okay";
};

dmesg log
[ 9.629125] systemd-journald[172]: Received SIGUSR2 signal from PID 1, as request to rotate journal, rotating.
[ 9.645727] systemd-journald[172]: Vacuuming done, freed 0B of archived journals from /run/log/journal/8f1435.
[ 18.661352] platform imx93-lpm: deferred probe pending
[ 46.640645] esp32_hosted: esp_reset: Triggering ESP reset.
[ 57.495476] esp32_hosted: esp_reset: Triggering ESP reset.
[ 69.640427] esp32_hosted: esp_reset: Triggering ESP reset.
[ 92.243182] esp32_hosted: esp_reset: Triggering ESP reset.

The device tree information and dmesg information are as above. It seems that the SDIO is not functioning. I captured the signals with a logic analyzer and found that there is no clock signal. Therefore, I suspect that it is still an issue with my configuration. I'd like to inquire if there are any similar cases. Thank you!

Use cases

We are currently in the planning phase of designing an electroencephalogram (EEG) acquisition device that uses Wi-Fi to transmit EEG signals.

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